increasing the force of the yank.

Jack Benson stood it as long as he could, then at last let out a yell
that was dragged from the depths of agony.

"I'm in time, it seems! Stop that! Now, turn and fight like a man--you
contemptible hound!"

It was Hal Hastings's voice that rang through the little cave. Hal had
just crawled in through the tunnel. Now, the young engineer, his frame
shaking with indignation, stood up at nearly his full length, prepared
to spring upon Gaston, who, also, had leaped to his feet.

"I thought it would be worth while to watch and shadow you to-night,"
jeered Hal, angrily. "It turns out I was right. The bushes planted
before the mouth of the tunnel bothered me, a while, in finding the way
in here after you--_but now I'm here!_"

Of a sudden Hal leaped forward, intent upon pouncing on the chauffeur.
But Hal's foot caught in a break in the flooring. He pitched and fell
forward.

With a snarl of glee Gaston burled himself upon the prostrate body of
the second submarine boy, pounding him furiously.




CHAPTER XIII